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Leitch DEC-6002 User Manual

Digital comb-filter decoder
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For Service, please contact your local representative or:
Leitch Europe
Holland Park House
Oldbury
Bracknell, Berkshire
ENGLAND
RG12 8TQ
Tel: +44 (0) 1344 446 000
Fax: +44 (0) 1344 446 100
All efforts have been made to ensure the accuracy of this manual. Should any errors be noticed, please
notify the above.
© Leitch Technology International Inc. 2001
The copyright in this document is the property of Leitch Technology International Inc and it may not be
copied, reproduced, used for manufacture, nor the contents divulged without the express permission in
writing of Leitch Technology International Inc.
All Rights Reserved.
DEC-6002 USER MANUAL
DIGITAL COMB-FILTER DECODER
Leitch Inc.
111 Galway Place
Teaneck, NJ 07666
USA
+1 201 833 8083
+1 201 833 8089
Leitch Asia
Unit 306B
HK Industrial Technology Centre
72 Tat Chee Avenue
Kowloon Tong
HONG KONG
+852 2776 0628
+852 2776 0227

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Summary of Contents for Leitch DEC-6002

  • Page 1 © Leitch Technology International Inc. 2001 The copyright in this document is the property of Leitch Technology International Inc and it may not be copied, reproduced, used for manufacture, nor the contents divulged without the express permission in writing of Leitch Technology International Inc.

  • Page 2: Safety Considerations

    This Leitch product is warranted against defects in materials and workmanship for a period of one year from the date of invoice. During the warranty period, Leitch will, at its option, either repair or replace products which prove to be defective.
  • Page 3 (normal blow, time delay, etc.) are to be used for replacement. Caution This add on device, model DEC-6002, is intended to be installed in equipment in the field, by the user, in the manufacturer’s defined operator access area. Check the...
  • Page 4 CONTENTS 1. GENERAL DESCRIPTION................... 1 2. INSTALLATION ......................4 3. SPECIFICATION ......................9 4. EDGE CONNECTIONS ....................10...

  • Page 5: General Description

    1. General Description. The Genesis DEC-6002 eurocard module is a precision adaptive comb filter decoder for use in any application requiring translation from the analogue composite format to the digital component format. All processing is carried out in the digital domain to full broadcast quality, maintaining 10 bit accuracy from input to output.
  • Page 6 Video Gain 6002 Chroma Gain Black Level NTSC Hue Multi Use Hex Switch Default = 0 Remote/Local VBI blanked/VBI passed EDH off / EDH on No Pedestal / Pedestal 525 / 625 PAL M & N / PAL I & NTSC Coherent / Non-Coherent Manual / Auto Detect Store...
  • Page 7 LK7 LK8 SW5 (not fitted on Issue A and B PCB’s) Note: LK5-LK9 Select PSU options A-B = External Rails B-C = Leitch Rails IC 7 IC 34 Document Number: DEC-6002UM2.doc Issue 2 24th March 1998...

  • Page 8: Installation

    2. Installation Rearconnectors that cannot be used in the FR-6002 will be marked as being so. When used in a FR-6004 the rearconnector interconnections are as shown in the manual. When used in a FR-6002 or FR-6001 chassis the rearconnector is mounted horizontally.
  • Page 9 Leitch chassis. When B-C is shorted together on all these links the normal +6.5 and -7.5V rails are used.
  • Page 10 Within SW2, switches 5 and 6 select the different modes of decoding adaptation available from the DEC-6002 card. Switch 5 acts as the least significant bit and switch 6 as the most significant bit. So 00 (off,off) is decoding mode 0 and 10 (on,off) is decoding method 2.
  • Page 11 Adaption modes 1 and 2 offer intermediate levels of adaption. The selection between the decoding modes is a subjective issue and will be largely dependent on the demands of the application. Switch no 4: Set this switch on to kill TRS on the output when there is no input present.
  • Page 12 Hex Switch: When the hex switch is at zero, all the pot functions are inactive and set to their pre-set values. In any other switch setting (1 to F), the pots are active. The function of the USER led (see diagram page 2)is also controlled by the HEX switch.

  • Page 13: Specification

    3. Specification Mechanical Length 220mm Width 100mm Height 18mm Weight 250g Electrical Power Consumption 11.7W (1.8A @ 6.5V) Delay 70us Frequency Response +0.1dB to 5.5MHz Return Loss >40dB Subcarrier Rejection >50dB transient response <0.2%K rating diff. phase error <1 degree diff.

  • Page 14: Edge Connections

    4. Edge Connections Row A Function Row B Function Pin 1A Analogue I/P Pin 1B Pin 2A Pin 2B Pin 3A Pin 3B Pin 4A Pin 4B Pin 5A Looping Analogue O/P Pin 5B Pin 6A Pin 6B Pin 7A Gnd (Iss C PCB) Pin 7B Gnd (Iss C PCB)